The Touch ID reveals itself as a series of capacitors that remembers the ridges on your finger. Five to ten images are required to keep a profile of your prints. And in case you're worried about your fingerprints being kept on file at Cupertino, fear not. The image is kept locally on the phone. The markings on the 8MP iSight camera indicate that it is a Sony built sensor, as expected.
iFixit says that the the internal design of the Apple iPhone 5s shows "some streamlining and optimization in its internal construction." Check out more details of the Apple iPhone 5s teardown below.
source: iFixit via Pocketlint